Inbound authentication failed with error UnexpectedExchangeAuthBlob
New Exchange 2013 on Windows Server 2008 R2, in coexistence with Exchange 2007 on Windows Server 2003.Except for one test mailbox, all mailboxes are still on Exchange 2007. Virtual directories are...
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FrontendProxyEnabled Proxy all outbound SMTP traffic through CAS
Hello allI am running Exchange 2013 CU8. I have two AD sites, and two DAG's. 5 mailbox servers in each DAG, and 4 CAS servers in each AD site. Environment looks similar below. The picture shows 4...
View ArticleExchange 2013 - Unable to send email, Internally & Externally
Hi,I have new testing lab to play around with which is starting to drive me insane. I have exchange 2013 and outlook 2013. I can receive emails from external domains but I am unable to send emails...
View Articlehow to block external email on exchange server 2013
in my environment many users trying to send and received the email from external domain. so is there any way to block single user or multiple users to communicate external domain email id.Abp
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Disable unauthorized SMTP Relay within Domain
Hi All,We have Exchange 2013 SP1 infrastructure on top of Windows Server 2012 R2. We have a DAG and CAS NLB clusters.Anyone can relay Emails from my SMTP to all users within my domain without...
View ArticleThe message is pending in the queue 'SERVER\Unreachable'. The last error was...
Hello all,I am doing a lab at home... and i installed and partially configured Exchange 2013.Now i have second problem when sending a e-mail:"The message is pending in the queue 'SERVER\Unreachable'....
View ArticleEmailAddressPolicy %1g%s@contoso.com not working ("Failed to generate proxy...
For some strange reason we cannot use the EmailAddressPolicyTemplate %1g%s@contoso.com (jsmith@contoso.com) for a particular emaildomein on our Exchange 2013 server. If we create the address policy and...
View ArticleAll inbound mail stuck in Submission Queue with a delivery type of Unknown...
All inbound mail stuck in Submission Queue with a delivery type of Unknown and error A Local Loop was Detected My email organization consists of two email servers: Exchange 2013, Oracle Messaging....
View ArticleNew Exchange 2013 Cluster messages getting bounced
Hi all, We have an issue with a new Exchange 2013 cluster consisting of 2 CAS and 2 MBX servers running on Windows 2012 R2. The messages sent from this cluster are being bounced by more than 1...
View ArticleExternal Emails are not showing up from one domain
Hello, we are working with Exchange 2013 on a Windows 2012 R2 server. We also have a Barracuda Spam & Virus filter in place. We are not seeing a mail flow issue in general however, mail coming from...
View ArticleMeeting request for user going to another mailbox
Hi,This one has me stumped.. after working with MSX in one form or another since 5.5, I haven't seen anything like it.Essentially we have one mailbox user on an Exchange 2013 mailbox server. Whenever...
View ArticleNew Exchange 2013 environment messages getting bounced
Hi all, We have an issue with a new Exchange 2013 environment consisting of 2 CAS and 2 MBX servers running on Windows 2012 R2. The messages sent from these servers are being bounced by more than 1...
View ArticleBCC messages to DLs via third mailbox
Hi,We're having trouble getting our employees to BCC all distributions lists in our company. Problem resides in everyone clicking 'Reply to All' to reply which, much sooner than later, always floods...
View ArticleExchange 2013 - Receive Connectors and External App Relay
Hello There,Could you guys Help me?We have an external app hosted on a vendor Webserver. They need to send e-mails to our Exchange Environment, authenticating the e-mail.To allow that, I understand...
View ArticleSupport for TLS 1.2 over Exchange 2013 on Server 2012?
Greetings,We're trying to roll out TLS 1.2 in our test environment and can't seem to get Exchange to work with the protocol.We've been using this method to enable TLS 1.2 (and disable the other...
View Articleusers send messages as ATT00001 with ATT00002.bin attachements with SMIME...
Hello, I'm running an exchange 2013 system and we have an issue that if users sent Encrypted emails they show up on older versions of Outlook and mobile phones as ATT00001 and ATT00002.bin. It doens't...
View ArticleOutlook to Exchange Disconnection
Hi There,We have 4 sites (A,B,C & D) ,all connected to site A with an MPLS connection.Exchange server resides on site A and clients from all sites access emails through Outlook.Request your...
View ArticleSetting a delay on all emails sent
Hi all,An interesting one for you out there. We have a law firm as a customer and they would like to delay all emails sent so that there can be a final check before emails leave that confidential...
View ArticleExchange 2013 to Exchange 2007 mail queue is stuck with error 451 4.4.0 - 235
Hello,When sending mail from exchange 2013 to exchange 2007 using SMTP relay to mailbox delivery group, mails stuck in queue with the error: [{LRT=5/12/2015 6:03:24 AM};{LED=451 4.4.0 Primary target IP...
View ArticleExchange 2013 CAS receive connector gives "451 4.7.0 Temporary server error....
Hi,We have an very strange issue with Exchange 2013 (CU8, issue was the same with CU7) and receive connector on CAS. We have 1 CAS server,1 Edge and 2 Mailbox servers. This started to happen when 2010...
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